ICH: Q 4 B Annex 1: To note for evaluation and recommendation of pharmacopoeial texts for use in the ICH regions on residue on ignition/sulphated ash general chapter - Step 5(ICH：Q4B附件1：用于评估和推荐ICH于 ICH 区域的炽灼残渣/硫酸盐灰分药典文本的注释-第 5 步)